Cited 2 time in webofscience Cited 1 time in scopus

White emission from nano-structured top-emitting organic light-emitting diodes based on a blue emitting layer

Title
White emission from nano-structured top-emitting organic light-emitting diodes based on a blue emitting layer
Authors
Hyun, WJ[Hyun, Woo Jin]Park, JJ[Park, Jung Jin]Im, SH[Im, Sang Hyuk]Park, OO[Park, O. Ok]Chin, BD[Chin, Byung Doo]
DGIST Authors
Park, OO[Park, O. Ok]
Issue Date
2013-03-06
Citation
Journal of Physics D: Applied Physics, 46(9)
Type
Article
Article Type
Article
Keywords
Blue-EmittingElectroluminescence SpectraIntrinsic EmissionMicrocavitiesMicrocavity EffectsMultimodesNano-StructuredNano-StructuresNano PatternOrganic Light-Emitting Diodes (OLEDs)Resonant EmissionsScattering EffectsTop-EmittingWhite Emissions
ISSN
0022-3727
Abstract
We demonstrated that white emission can be obtained from nano-structured top-emitting organic light-emitting diodes (TEOLEDs) based on a blue emitting layer (EML). The nano-structured TEOLEDs were fabricated on nano-patterned substrates, in which both optical micro-cavity and scattering effects occur simultaneously. Due to the combination of these two effects, the electroluminescence spectra of the nano-structured device with a blue EML exhibited not only blue but also yellow colours, which corresponded to the intrinsic emission of the EML and the resonant emission of the micro-cavity effect. Consequently, it was possible to produce white emission from nano-structured TEOLEDs without employing a multimode micro-cavity. The intrinsic emission wavelength can be varied by altering the dopant used for the EML. Furthermore, the emissive characteristics turned out to be strongly dependent on the nano-pattern sizes of the nano-structured devices. © 2013 IOP Publishing Ltd.
URI
http://hdl.handle.net/20.500.11750/2438
DOI
10.1088/0022-3727/46/9/095107
Publisher
Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringETC1. Journal Articles


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